Sirocco (aka Scirocco) is the horse of wind.
Background[]
When Valanice arrives at the Mountain of Winds, she encounters Sirocco several times, causing her to wonder what he is.
After Valanice saves Mab, she instructs Valanice to use Sirocco to contact the other winds in order to get help from King Oberon and Queen Titania. Using a Magic Bridle from Mab, Valanice is able to ensnare him and Sirocco carries Valanice to the mountaintop. However, she is knocked off of Sirocco by Borasco as a cruel joke. Sirocco is sent to help find Oberon and Titania along with the other winds.
Behind the scenes[]
If Valanice gets too close to Sirocco when she first visits the Mountain of Winds, he can knock her off the side of the mountain to the path below. However, unlike most times a playable character falls such a distance, Valanice is not killed in the fall and simply gets up again.